V941901201152115

Technical Service Bulletin
94-19-01 - Exterior Lights, Moisture Accumulation
Transaction
No:
2011521/15
Release date:
4/21/2020
Condition
Applicable Vehicles
Year
Eng. Code
Trans. Code
VIN Range
From
VIN Range To
1996-2021
All
All
All
All
Model(s)
All
(except Routan)
Revision Table
Instance Number
Published Date
Version Number
Reason For Update
2011521/15
4/21/20
94-19-01
Updated to include
additional models and
model year applicability.
2011521/14
2/18/19
V941901
To include model year
2019.
2011521/13
5/31/17
V941701
To include model year
2018.
2011521/1
8/1/03
V940301
Original publication.
Condensation and or water droplets visible on inside of exterior light lenses.
Note:
Condensation does not affect performance of light assemblies.
Page 1 of 4
© 2020 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
94-19-01 - Exterior Lights, Moisture Accumulation
Transaction
No:
2011521/15
Release date:
4/21/2020
Technical Background
Exterior light assemblies
(headlights, taillights, fog lights,
turn signals) are vented and
may collect moisture on their
inner surfaces, depending on
humidity and climatic
conditions. The unfavorable
condensation built up (Figure 1)
visible to the customer is more
common with modern exterior
lights because of clear glass
optics, however this condition
will not have an impact on the
functionality or durability of the
component.
Figure 1
Environmental conditions that frequently cause condensation to build up
on lens:
 Car washes
 Driving or parking in rain/snow
 Frequent short distance operation in wet weather
For headlight condensation that is due to environmental
conditions, the affected lens surface should be cleared after
approx. 30 minutes of light operation.
Production Solution
No production change required.
Page 2 of 4
© 2020 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
94-19-01 - Exterior Lights, Moisture Accumulation
Transaction
No:
2011521/15
Release date:
4/21/2020
Service
In cases where larger water droplets have formed on the inside of the lens or significant amount of water
has collected at the bottom of a light assembly, Figure 2:
Figure 2
 Check that the housing covers (Figure 3), are properly installed. If the housing covers are not fully
seated in place, use compressed air (less than 30 PSI) to blow out the lens and recheck for leaks.
Figure 3
 Check for leaking seals, cracks in lenses or assemblies.
Page 3 of 4
© 2020 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Technical Service Bulletin
94-19-01 - Exterior Lights, Moisture Accumulation
Transaction
No:
2011521/15
Release date:
4/21/2020
DO NOT replace light or lens assemblies unless damage is found.
If damage to seals or cracks to lenses or assemblies are found:
 Follow normal repair procedures for this type of failure (provide photograph(s) with repair
documentation for verification).
If the condition is determined to be condensation due to environmental conditions and no
damages are found, explain to the customer the information provided in the Technical
Background section above.
Warranty
Information only.
Required Parts and Tools
No Special Parts required.
No Special Tools required.
Additional Information
All part and service references provided in this Technical Bulletin are subject to change and/or removal.
Always check with your Parts Dept. and Repair Manuals for the latest information.
Page 4 of 4
© 2020 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.